I really gotta commend you for using 3D in a game jam!
And not only that, the graphics are great too! I really like the skeletons and how goofy they look, and plus the game feel in the movement and digging is actually really good as well. I really like the windup on the digging where it builds up, and the movement lvl 2+ feels really good to move around in.
Granted there are a couple of bugs I encountered, mostly dealing with stairs that lead off the map on the right side, and the occasional geometry preventing movement, but but besides that, it's a pretty decent rogue like.
Also one improvement I'll really like to add is a reaction to the player skeleton when you get hit. Right now it doesn't really feel like I'm taking damage, but a little reaction such as a color change or even a sound effect really adds alot.
Either way, good work on the game!